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Comparative analysis of the heterogeneity of mononuclear cells present in adult and cord blood by simultaneous examination of multiple phenotypic characteristics.

Abstract：

:In an attempt to better relate specific membrane characteristics of human adult and cord blood lymphocytes to specific functional activities, the phenotypic differences that exist in these two populations have been examined. Cord blood cells have considerably more spontaneous suppressor cell activity than adult cells. A technique that allows cells to be examined simultaneously for their ability to ingest latex beads, react with specific monoclonal antisera, bind sheep erythrocytes, or react with the Fc portion of IgG was used. As well as assessing fresh populations, phenotypic changes that occur when such cells are held in culture or stimulated with phytohemagglutinin for 3 days were sought. Many differences were found when comparing these mononuclear populations. These included the observations that 12% of adult and 9% of cord blood E-rosette-forming cells ingest latex beads and that 9% of OKT3 reactive cells in both populations did not form E rosettes. In cord blood 58% of T cells that bind OKT8 do not form E rosettes. A similar percentage of cord blood T8-positive cells express a receptor for Fc gamma, such cells being very uncommon in adult blood. Four "monocyte" subpopulations were identified in both samples. One such population (an OKM1- and Fc gamma-positive, nonphagocytic cell) was three times more common in cord blood. In cord blood some OKM1-positive cells also appeared to be simultaneously OKT8 positive. These phenotypic variations forward populations that may be candidates responsible for the functional differences noted in vitro.

journal_name

Cell Immunol

journal_title

Cellular immunology

authors

Johnson C,Dwyer JM

doi

10.1016/0008-8749(83)90214-9

subject

Has Abstract

pub_date

1983-10-01 00:00:00

pages

88-98

issue

1

eissn

0008-8749

issn

1090-2163

pii

0008-8749(83)90214-9

journal_volume

81

pub_type

杂志文章

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